Manufacture of paper boxes



March 22, 1932. c. s. ANDREWS MANUFACTURE OF PAPER BOXES Filed Jan. 10,1930 2 Sheets-Sheet am s 137322222,

March 22, 1932. c" s, ANDREWS 1,850,164

I MANUFACTURE OF PAPER BOXES Filed Jan.-10, 1930 2 Sheets-Sheet 2 vemtoz9 /0 I I 7 [flaw be j i' Patented, Mar. 22 1 932 UNITED STATES PA'TENTR'OFFICE f GHAMPE S. ANDREWS, OF NORTH CHATTANOOGA, TENNESSEE,ASSIGNOR TO BOX BLANK CORPORATION, OF NEW YORK, N. Y., A CORPORATIONDELAWARE MANUFACTURE OF'IAPER BOXES Application filecl January 10, 1930.r Serial No. 419,770.

' The present invention relates to the manufacture of boxes andparticularly boxes made of paperboard. The object of the 111- vention isto produce a machine assembled 5 box which is so designed andconstructed of V a sheet blank with added reinforcements that a box ofthe maximum strength andrigidity is obtained from the material employed.

\ The invention is applicable to a box com- 10 prising a body whichisfolded to form a reby a machine, preferably automatic in op-o oration,whereby said blanks or pieces are folded, located and adhesively securedtogether to form a set up box or box members ready for packing. The boxmembers as produced according to this inventlon, have stronglyreinforced corners and bottoms, and also reinforced tops when theinvention is applied to the cover member of the box.

The improved method of manufacture and the box produced therebywill be.more fully described hereinafter with reference to the accompanyingdrawings, where-1n:

Figure 1 is a perspective view of atelescoping box having two sections,namely the body or receptacle and the cover therefor, the latter beingbroken awayto show the inside of the body;

Figure 2 is a cross of Figure 1';

Figure 3 is a line 3--3 of Figure 1, ing omitted;

Figure 4 is a plan view of the prepared and partly reinforced blank fromwhich the box or cover is composed; s

Figure 5 is a plan view of the blank which is partly folded and to whichblank a bottom or top reinforcement member has been applied; and

longitudinal section of the the cover member befied. I

Referring to said drawings the body mem- 1 her 1 and the cover memberv 2may be identical with the exception that the cover member section on theline 2+2 I Figure 6' IS a fragmentary sectional view of a part of thebox memberas slightly modiis slightlylarger than the body member so asto permitof a telescoping fit. Both of said members are formed of asubstantially similar shaped blank 3 havingsections de-' fined by scorelines 4.- Sections 5 form the outer side walls and sections 6 form theend walls of the box member. Flaps or folding over portions 78,connected respectively to the side walls 5 and end walls 6, are arrangedto fold inwardly from the top edges of the members 56. Tongues 9 extendfrom both ends of the sections 5 and these tongues are arranged to foldinwardly so as to be overlapped by said folding in flaps 78. It will beunderstood that, the board usually used for boxes is apt to tear at thecorners especially on the creased folding lines. It is proposed, whenrequired, to reinforce the corners of the box byadhesivelysecuringthereon strips 10 composed of tough paper and when thecorners are folded these strips 10 are doubled over and thereby providean efficient rein forcement.

The bottom of the body and the top of the cover member are reinforced bythe addition thereto of a sheet which substantially covers said bottomand top, leaving only 'suflicient clearance for the bending of the sideand end wall forming sections into a vertical position, substantiallyatright angles to the bottom or top of the box. The cover member may becut out at 12 so as to provide a finger hold to facilitate removal ofthe cover.

In the operation of the improved method of manufacture above set forth,the prepared blanks are printed, when required and then passed through ablanking out operation in which the blanks are cut out and scored asrequired. In a subsequent operation the reinforcement paper strips 10are applied at points adjacent to the corners of the blank, as shown inFigure 4. vThese strips are located and adhesively secured by means ofan automatically operating machine, specially designed for the purpose.In another operation the blanks are passed through another machineoperation, which folds over the flaps 78 and adhesively secures them tothe side wall sections 56 and in this operation the paper strips 10, ifemployed, are doubled over on themselves. Preferably in a separatemachine operation the reinforcement sheet 11 is located in properrelative position with respect to the bottom or top of the blank andadhesively secured thereto. After the above described operations havebeen effected, the blank is then in the condition to be folded andadhesively secured to form the set up boxmember. In this final foldingoperation, the double side walls are brought to the vertical position soas'to stand at right angles to the bottom or top of the member as thecase may be. The tongues 9 'are folded inwardly against the end walls 6which are also brought into a vertical or right angle positionrelatively to the bottom or top of the box. hen in this'position, theflaps 8 are folded over the end Wall sections so that said tongues liebetween said end wall sections and the ovei' lapping flaps which latterare adhesively ecured to retain the box member in the folded set upposition.

Referring to Figure 6, herein the construction is modified slightly insuch a manner that the folded in end wall flap 8 is lengthened so as tofrictionally bear on the surface of the box bottom and the edge of saidflap bears against the shoulder 13 formed by the edge out gluing or anyadditional securing means.

The box or container hereinbefore described has all the essentialrequirements of an efficient, economical packing box. At the 7 sametime, it is peculiarly strong and rigid because the sides and ends, aswell as the bottom and top, are formed of a double thickness of board.These results are obtained without sacrificing the appearance of the boxsince the spacing of certain members in relation to other members issuch that the interior of the box presents an unusually neat appearance,resembling a single walledbox although it is in reality double walled.This appearance may be brought about by causing the inner flaps on theside and end sections to extend approximately the right distance tocontact with the reinforcing sheet on the bottom and top of the bodysection of the box although special accuracy and precision inmanufacture are not required by the im proved methods hereinbeforedescribed.

The box or container hereinbefore described is conformingly designed topermit employment of the method of manufacture hereinbefore describedwhich includes a num ber of operations which are preferably effected bymachine operation. Accordingly, a box is produced that has all theessential requirements of an efficient and economical packing box. It isto be understood that the claims hereunto annexed are intended to coverthe above described method of manufacture which includes the severaloperations described herein and said claims also are intended to coverthe product which is substantially the box or box member constructed andarranged as shown in the accompanying drawings.

I claim:

1. In themanufacture'of a'box member of the class described, theformation of the composing blank by cutting and creasing so as to definesectionscomprising a body, side sections and end sections, said end andside sections having flaps connected thereto, said side sections havingtongues extending laterally therefrom; mounting a reinforcing sheet onthe inner surface of said body; folding over the flaps connected to theside walls; bending;

said side walls into a perpendicular position relatively to saidbodyportion; folding said tongues inwardly and folding the flaps on saidend walls so as to over-lie said tongues.

2. In the manufacture of a box member of;

the class described, the formation of the com posing blank by cuttingand creasing so as to define sections comprising a body, side sectionsand end sections, said end and side sections havingflaps connectedthereto, said side sections having tongues extending laterallytherefrom; precisely locating and adhesively securing a reinforcingsheet on the inner surface of said body;folding over and adhesivelysecuring the flaps connected to the side Walls to these walls; bendingsaid side walls into a perpendicular position relatively to said bodyportion; folding said tongues inwardly and bending and adhesive lysecuring the flaps on said end walls so as to over-lie said tongues.

3. In the manufacture of a box container and cover member of the classdescribed, the formation of the composing blank by cutting and creasingso as to define a section forming the top or bottom of the box member,side sectionsand end sections forming the side and end walls of the boxmembcr,said end and side sections having flaps connected thereto, saidside sections having tongues extending laterally therefrom; preciselylocating and adhesively securing a reinforcing sheet on the innersurface of the top or bottom forming section; locatingand adhesivelysecuring reinforcing'strips on the corners of said blank folding overand adhesively securing connected flaps to said side walls; bending saidside walls into a perpendicular position relatively to the top or bottomof said member; folding said tongues inwardly and bending and adhesivelysecuring the flaps on said end walls so as to overlie said tongues andsaid reinforcing corner strips.

4. The product of the hereinbefore described method consisting of a boxcomprising a container member and a telescoping cover member each memberhaving double glued side walls, double glued end walls, the inner Wallof said double end walls over-lying inwardly folding tongues extendingfrom said side walls and a separate sheet adhesively secured to the topsurface of the bottom.

sheet mounted on the inner surface of the bottom or top of said member,providinga re-enforcement and retentive means for said inner end walls.

V 6. A box member produced by the method hereinbefore described, saidmember comprising a top or bottom glued double side walls, double endwalls, reinforcement corner strips, tongues extending from said sideWalls, the inner wall of said double end wall over-lying 7. said tonguesand said corner strips, and a reinforcing sheet mounted on the innersurface of said top or bottom operating as a re-enforcement and asretentive means for said inner end walls.

7. A box partly or wholly produced by the method hereinbefore described,said box comprising a body or containing member; said body member havingbottom, side and end walls said side walls having inwardly folded flapsconnected to said side walls; said side walls having end piecesextending therefrom adapted to be folded inwardly against said endwalls; said end walls having flaps folding over said pieces and aseparate reinforcing sheet located on the top or inner surface of saidbottom so as to provide a reinforcement and means for retaining said endwall flaps in the folded position.

8. The method of manufacturing laminated boxes which consists in cuttingand scoring the blank to define a body section, side sections and endsections, the side and end sections having flaps integral therewith andthe side sections having tongues extending laterally therefrom, thensecuring a reinforcing sheet on the body portion spaced from the sideand end walls a distance not less than the thickness of the blank, thenfolding over and adhesively securing the flaps to the side Walls to forma double thickness thereof substantially their entire depth, thenbending the side and end walls into a perpendicular position relative tothe body portion so that the reinforcement on the side walls contactswith the reinforcingsheet on the body section and forms a tight .jointtherewith, the tongues onsaid side walls being bent inwardly to contactwith the end walls, then folding over the flaps on the end walls tooverlie said tongues and to contact with the reinforcing sheet on thebody section thereby forming a closed joint between the body reinforcingsheet and the flaps to give the appearance on the inside of the box of asingle walled box.

In testimony whereof I have hereunto set in hand.

y CHAMPE S. ANDREWS.

